One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,11)(3,8,12,15)(4,9,13,14)(5,6,10,16)(17,18,23,24)(19,27,21,25)(20,30,31,26)(22,28,32,29)(33,34,39,42)(35,38,40,36)(37,41,47,48)(43,46,45,44)(1,3,7,12)(2,8,11,15)(4,5,13,10)(6,14,16,9)(18,24)(20,31)(25,27)(28,29)(33,35)(34,38)(36,42)(37,45)(39,40)(41,44)(43,47)(46,48)(3,12)(4,13)(8,15)(9,14)(17,19,23,21)(18,25,24,27)(20,28,31,29)(22,26,32,30)(33,36,39,38)(34,40,42,35)(37,46,47,44)(41,43,48,45)(1,4,7,13)(2,9,11,14)(3,5,12,10)(6,15,16,8)(17,20,23,31)(18,26,24,30)(19,29,21,28)(22,27,32,25)(33,37,39,47)(34,41,42,48)(35,43,40,45)(36,44,38,46)(1,5)(2,6)(3,13)(4,12)(7,10)(8,14)(9,15)(11,16)(17,21,23,19)(18,27,24,25)(20,28,31,29)(22,26,32,30)(33,35)(34,36)(37,43)(38,42)(39,40)(41,44)(45,47)(46,48)(1,6)(2,10)(3,14)(4,8)(5,11)(7,16)(9,12)(13,15)(17,22,23,32)(18,28,24,29)(19,26,21,30)(20,25,31,27)(33,38,39,36)(34,40,42,35)(37,44,47,46)(41,43,48,45)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.